Saw-sharpening machine.



No. 648,932. lPatenten: may a, |900.'-

F. nuuuemm. f SAW SHARIPENING MACHINE.

(Application med my 15, 1899.)

(No Model.)

'mc ranma Firms cc.. wucmumm. WASHINGTDN. u. c.

UNITEDv .STATES `PrfrENT OFFICE.

FREDERIC DUQUEMIN, OF FALL RIVER, MASSACHUSETTS.

SAW-SHAR'PENING MACHINE.

SPECIFICATION forming' part of Letters Patent N0. 648,932, dated May 8,1900.

Application filed .Tuly 15, 1899. Serial No. 7231925. (No model.)

T0 @ZZ wtorn it may concern.-

Be it known that I, FREDERIC DUQ UEMIN, a citizen of the United States,residing at Fall River, in the county of Bristol and State ofMassachusetts, have invented a new and useful Saw-Sharpening Machine, ofwhich the following is a specification. l

My invention relates to tools forsharpening sawssuch as carpentershandsaws, bucksaws, meat-saws, and the like-and has for its object toprovide a tool of this class of simple and cheap construction, havingimproved means for regulating the bevel, depth, and pitch of the teeth,preferably after the saw has been jointed.

With this object in view my invention consists in the improvedconstruction, arrangement, and combination of parts hereinafter tionalview of the tool, the saw being partly illustrated in dotted lines.sectional View.

Like numerals of reference mark the same parts wherever they occur inthe various figures of the drawings.

Referring to the drawings by numerals, 1 indicates the base of the tool,upon which is secured an upright split or hollow clamp 2, provided withthumb-screws 3 3 at its ends to bear against the blade 4 of -a saw-suchas a carpenters handsaw, bucksaw, or meatsaw-and longitudinally grooved,as at '5, to receive and permit of the sliding thereon of a head 6. Thehead is provided with a horizontal opening 7 to receive a block 8,arranged to Fig. 3 is a detail swivel on a vertical axis by means of apin 9,

passing vertically through the head from the top and secured to theblock by a smaller pinv or screw 10. Thehead straddles the clamp and isadjusted and held thereon by a setscrew 11, the pin 9 being secured inthe head by a set-screw 12.

receive a rod 22 and larger openings to re-A f ceive the ferrule 23 ofthe'handle of a iile 24 and a split block 25 to encompass the point ofthe file.

` At one side of the head 6 is adjustably secured a gage 26,longitudinally slotted, as at 27, to receive its securing-bolt 28,provided with a bottom ange 29 to support the rod 22 and a top flange30, through which passes a.

set-screw 31, bearing against the top of the head to adjust the heightof the gage. On the opposite side of the head is pivoted a pawl 32, heldin contact with theteeth of the saw by a spring 33. The ferrule 23 ofthe file is held in the block 20 by a set-screw 34, and the split block25 is held in block 21. by a setscrew 35. v

The upper end of the head 6 is marked, as at 36, to form a dial, uponwhich a pointer 37 on the upper end of the pin 9 indicates theadjustment of the swiveling block 8.

After the saw is jointed and the parts assembled as shown and describedthe saw may be filed by reciprocating the file in the usual manner.

To regulate the bevel of the teeth or the angle at whichY the file maybe inclined to the length of the blade of the saw, the swiveling block 8is adjusted on its axis and secured by screw 12.

To regulate the depth of cut, the gage 26 is raised or lowered byset-screw 31, carrying rod 22 with it, and secured by securing-bolt 28.

To regulate the pitch of the saw or the distance apart of the points ofthe teeth, the ferrule 23 and split block 25 are turned in blocks 20 and2l and secured by set-screws 34 and 35.

By means of the constructions and adjustments described the Iile isproperly set and guided and all the operations accurately and quicklyperformed.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patentof the United States, is-

IOO

In a saw-sharpening tool, the combination supporting-rod andnie-supports adj ustabiy ro' with a support, of a head thereon providedsecured to the free ends of said threaded rods, With a transverseopening, a perforated block and an adjustable support for thesupportpivotally secured in the opening, a reeiproing-rod.

5 eating rod through the perforation, each end of which is provided withtransverse perfora- FREDERIC DUQUEMIN' tions, a threaded rod adjustablysecured in Witnesses: one of the openings at each end of said rod MELVINXV. OOTTLE, by means of a nut upon each side thereof, a l v NATHANIELDRING.

